* {
	margin: 0;
	padding: 0;
}

#app {
	width: 500px;
	height: 600px;
	margin: 0 auto;
}

.line {
	width: 100%;
	height: 1px;
	background-color: #eee;
}

ul {
	list-style: none;
}

.sub {
	display: block;
	margin: 10px auto;
	padding: 5px 15px;
	background-color: #1E90FF;
	color: #FFFFFF;
	border: none;
	border-radius: 5px;
}

.answer {
	margin-top: 10px;
	border: none;
	border-bottom: 1px solid #999999;
	outline: none;
}

.text-answer {
	margin-top: 10px;
	width: 300px;
	height: 100px;
	border-radius: 5px;
	outline: none;
}

.btm {
	width: 500px;
	;
	position: fixed;
	top: 300px;
}

.btm .next {
	float: right;
}
